Since our last "Mammatus, Lenticular & Other Extreme Clouds" article, the good old Nature kept giving the photographers great opportunities for stunning shots. Problem is, great celestial displays are often followed by some nasty storms... which hardly anybody would want to witness firsthand.

We'll start with a "Clouds Beauty Contest". Most sources are listed directly under the photos, though some original credits remain unknown. We mentioned "Clouds Appreciation Society" as a premier destination for cloud-watchers & photographers before, and it remains the "one-stop" website with more and more spectacular submissions every day. Among the other sources of this article, you will see a few examples out of thousands worthy pictures displayed there.

It also shows how easy it is to make these shapes by Photoshop. The following series of pictures, though, is definitely real and appeared in Daily Mail. The most unusual ones are "the six-legged sky pig":

(photo by Ian Loxley)

and a "head of the sky dragon":

(photo by Felicity Norman)

Tornados & Wall Clouds

First, the most fantastic picture - the storm structure captured in its entirety, over Red Cloud, Nebraska. The linked page describes the damage that was wreaked by the accompanying tornado.

We are also reminded by the saying on his site that "It's hard to enjoy the fascination of storm chasing when people are getting hurt" (Alan Moller), so the combination of rainbows and tornadoes is really quite symbolic.

More recent shots of tornadoes, unfortunately uncredited:

(original unknown)

Rachel Rusinski took the following two pictures of Midwest storm looming over the plains in the morning. Right place + right time = amazing photography...

The photo above came from the most fascinating collection of northern lights pictures by Sigurour H. Stefnisson. Make sure to click on this link to enjoy their beauty.

Nacreous Clouds

Nacreous Clouds, or Mother-of-Pearl Clouds are a pretty common sight in the northern countries (like the ones shown here over Norway), when the sun is low on the horizon in December and January. They are also called "polar stratospheric clouds". They are best visible in the early dawn of after dusk, because they reflect sunlight from below the horizon (due to their extreme altitude and curvature of the Earth). They also play a certain role in decreasing the ozone layer by bringing up the gaseous nitric acid and disturbing the delicate cycles of the stratosphere.

Finally something rarely seen and truly strange: Cloud's "Gravity Wave".
Time-lapse photography captures a huge rolling huge wave, consisting of smaller clouds. "A gravity wave is... a wave moving through a stable layer of the atmosphere. Think of a rock being thrown into a pond. Ripples or circles migrate from the point the rock hits the water. An up and down motion is created." (Tama, Iowa KCCI-TV webcam on 6 May 2007)

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